Resilient vise-jaw faceplate having magnetic insert of lesser thickness



R. T. PHILIPS 4 2,666,352 RESILIENT VISE-JAW FACEPLATE HAVING MAGNETICINSERT OF LESSER THICKNESS Filed March 26, 1951 Jan. 19, 1954,

"am u I m L ..o.. mm m m P 0 D R M. l R

. of the disclosure made in the Patented Jan. 19, 1954 RESILIENTVISE-JAW FACEPLATE HAVING MAGNETIC INSERT OF LESSER THICK- NESS RichardT. Philips, Seattle, Wash.

Application March 26, 1951, Serial No. 217,588

This invention relates to improvements ina resilient vise-jaw face-platehaving -magnetic insert of lesser thickness and, more particularly, toan elastic or resilient vise jaw facing element or the like.

It is among the more important objects of this invention to provide aresilient or elastic vise jaw pad, which is easily constructed at lowcost, and which is extremely simple to'attach to a vise jaw or removetherefrom, without the use of tools, .or,any particular skill on thepart of the user; which will preclude thelmarring of work being grippedtherebetween when used in pairs and which is not easily displaced fromthe point of use under the normal conditions attendant upon the 'visesuse; which will accommodate irregularities in both the vise jaw facesand the 7 work to be gripped; and which even through embodyingsubstantial attaching means will not mar a workpiece appliedtherebetween.

These and. other objects of this invention will be apparent during thecourse of the following specification of the invention when taken inview attached drawing in which: a

Figure 1 is a perspective view of resilient vise jaw pad according to myinvention;

Figure 2 illustrates the application of a pair of jaw pads to the jawsof a vise; Figure 3 is an enlarged fragmentary detailed sectional viewthrough a portion of a pair of vise jaws equipped with my pads andshowing the action during gripping of workpiece;

Figure 4 illustrates in perspective a magnet employed in my vise jawpad;

Figure 5 is a rear view of modified form of elastic pad; and

Figure 6 is a vertical sectional view of a pad as shown in Figure 5.

Referring to Figure 2, I have there shown a vise of conventionalstructure having the usual stationary jaw l0 and movable jaw 12 thatmoves toward and away from the other jaw by means of the screw bar l4when manually manipulated by the cross rod I6. The gripping face of eachof the jaws I 0 and i2 is provided with a rubber or resilient pad I 8 ofthe type more clearly seen in Figure 1.

Each pad l8 comprises a gripping face that may be geometrically groovedas shown, or otherwise roughened, to provide a degree of frictionalcontact thereon when brought against a'workpiece. Preferably one edge 22is desginated the upper edge and the edges at right angles thereto arethe ends 24, 24.

, .4 Claims. (Cl. 81-38) Intermediate the ends and sides of the pad [8is provided a pair of magnets 26, 26 spaced apart from each other in asymmetrical manner and so arranged in the pad that they lie with theirgripping faces in the same plane as the rear face 28 of the pad. Thesemagnets are 7 more fully shown in. the enlarged perspective view ofFigure 4 to comprise a cylindrical body 30 that is laterally grooved at32 to provide pole pieces 34,- 34 the faces of which are preferablyco-planar with the rear face of the pad l8.

Such magnets as are most useful for my purposes are thealuminum-nickel-cobalt type sometimes more concisely described aspermanent magnets.

In using the cylindrical form, for attachment of the magnets within thepads, I form passages 21, 2! through the pad into which the magnets arepressed. By arranging that the thickness of the pad is greater than thethickness of the magnet body and its pole pieces, it will be seen thatthe gripping faces of the magnet 26 can be flush with the rear face 28of the pad while the other magnet face underlies the gripping orwork-contacting face of the pad. That condition is shown in Figures 1, 3and 6, and the reason for it lies in the fact that when the vise jawsare closed upon a workpiece, as W in Figure 3, the latter will begripped by the pad material but not between opposed magnets underordinary conditions and thereby marring of the workpiece is avoided.

The jaw pad l8 of Figures 5 and 6 is similar in all respects to that ofFigure 1 except that a single magnet is employed and in this instancethe magnet 26 is located in the pad centrally between the ends butnearer one edge than the other. Usually the magnet is nearer the upperedge 22' than it is the lower pad edge. By this arrangement a singlemagnet attaches the pad to a vise jaw where it tends to depend in abalanced condition.

In the manufacture of vise jaw pads as described herein, it will bereadily apparent that not only a variety of designs'may be applied tothe work-contacting face but that the face may also be smooth forparticular uses. It has been my experience that the rougher faces arepreferable for hard to grip workpieces whereas with easy to grip objectsnot having a polished surface, and thus not slippery, a smooth face ispreferable. I do not thereby intend to be limited to a particulartreatment of the gripping face of my vise attachment. However, it isimportant that the openings 21 into which the magnets 25 are placedshould extend from face to face in the pad. At the rear face the openingmust be coextensive with the size of the magnet so that the grippingface of the latter can be disposed flush with this rear face of the pad.Likewise the forward end of the opening in the gripping face should becoextensive with the magnet so that the rubber surrou'ndhig the magnetmay Ebe compressed but with none overlying the magnet to cause atoo-tight grip on an object at the risk of marring highly polishedsurfaces.

It will be apparent to those skilled in the .art that this disclosuremay be altered and :changed without departing from the reasonablemodifications and equivalents as come within the function and scope ofthe invention set forth' in the 'cla ims hereafter.

What is claimed is:

1. An elastic facing for vise jaws, comprising". a pad of resilientrubber-like material shaped to fewer the wcrmgripping face ef a wiseijaw and mating a through ripening extending from face to facetlcie're'of, having fa magnet positinned linsaiil through opening, dmagnet being 50f a thickness less than the thickness of said pad and:being disposed E1151 said pad :s'c that one face f the magnet is:fl'ush with the face of the padt'to be disp'oseda'gzair-i's't the avorkgi'ipping face of a vise .:jaw and the other :face iQf'EdhQ magnetunderlying :the plane of the work-gripping face of the pad, thenompressibili-ty of :said lresil ient pad material Ybeing such thatunder compression in a mammal work-gripping nperation its thick nessab'e greater than the thickness .of said magnet whereby only the padmaterial is pressed to the work being :gripped.

2. The combination :according to rclaim 11 in which 'there are at :leasttwo through ripen-sings 4 and magnets and they are arranged in the padin spaced apart relation longitudinally of the pad.

3. The combination according to claim 1 in which the magnet is centrallylocated between the ends of the pad and disposed nearer one edge thanthe other.

4. The combination of a pair of opposed vise jaws and a removable facingpa'd positioned on each jawysaid-pad being formed of resilient materialand being shaped to substantially cover the Work-gripping face of thejaw and having a through opening extending from face to face (thereof,and having a magnet positioned in said through opening, :said magnetbeing of a thickness less than the thickness of said pad and beingdisposed i-n said pad so that one face of the magnet is .flush with theface of the pad which is disposed against the work-gripping face of thecompanion vise jaw and the other face of the magnet underlying the planeof the work-gripping face :of the pad, the compressibility of :saidresilientpad material being such that under compression :-in a :normalwork-gripping -operation its thickness will be greater than thethickness of said magnet whereby only the pad material is pressed to thework being gripped.

ERICH-ARD T. PHILIPS.

References Cited in the file of this patent UNITED STAJIES PATENTSNumber Name 1 Date 1723,5118 .Ellison Mar. 524, I903 .;906;507 CanedyDec. '15, 1908 5.2362314 I'IrOjB -v s Aug. 7, 1 91 7 154E300 Lo'omisJune-29, '920 12 ;8gl1,3ik6 Fest Feb. 51, 21 944 22,519,107 .Brown eAug. 15,1950 2,606,470 Kinney l JAug. I2, 1952

